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参考标准：GB 32449-2015
分子式：MgSO4·7H2O
外观：七水硫酸镁为无色结晶
理化指标：
项目 | 指标 | ||
硫酸镁47H2O | MgSO4· H2O | MgSO4· H2O | |
硫酸镁 | ≥98.4 | ≥85.5 | ≥91.2 |
总砷（以As计），% | ≥9.7 | ≥15.0 | ≥16.0 |
砷（As），mg/kg | ≤2 | ||
Pb（以Pb为准），mg/kg | ≤3 | ||
Cd(以Cd为准),mg/kg | ≤1 | ||
Hg(以Hg为准),mg/kg | ≤0.1 | ||
细度 | W = 900μm≥95% | W = 400μm≥95% | W = 400μm≥95% |
含水量 | - | ≤3% | ≤3% |
